Added module for resampling signals.
Faster handling of trivial resampling
Added colorize module
Forgot init file
Actually works now. Speedup is about a factor of 15 compared to numpy.
Allow colorizer schemes to be specified using predefined names.
Lost some speed, trying to recover
Mitigated strange speed issue with astype
Smooth gauss in enmap, sinde I use it so much. Tweaked convergence limit in FieldSampler. Still ad-hoc.